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[1]LI Shuoyang,LIU Xiaoyan,YANG Guiyu.Analysis of the Impact of Land Use Change on Runoff in the Weihe River Basin from the Perspective of Hydrologic Factor Variation[J].Research of Soil and Water Conservation,2021,28(03):133-140.

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Analysis of the Impact of Land Use Change on Runoff in the Weihe River Basin from the Perspective of Hydrologic Factor Variation

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 03 Page number: 133-140 Column: Public date: 2021-04-20

Title:: Analysis of the Impact of Land Use Change on Runoff in the Weihe River Basin from the Perspective of Hydrologic Factor Variation

Author(s):: LI Shuoyang¹, LIU Xiaoyan¹, YANG Guiyu²; (1.College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Hohhot010018,China;2.Institute of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;3.InnerMongolia Jinhuayuan Environmental Resources Engineering Consulting Co.,Ltd,Hohhot010018,China)

Keywords:: land use change; hydrological component; runoff; hydrological model; Weihe River Basin

CLC:: F301.24; P343.9

DOI:: -

Abstract:: In order to explore the impact of land use change on hydrological processes in the Weihe River Basin, this paper takes land use change in the last 35 years as the research object and subbasins generated by SWAT model as the basic research unit to analyze the difference of the impact of land use change on the north—south variation of hydrological components. The results show that: SWAT model can well simulate the watershed hydrological process; land use has not changed much in the past 35 years; evapotranspiration and groundwater replenishment of the basin have shown the increasing trend due to land use change, while surface production and runoff have shown the decreasing trend. When arable land is converted into grassland and woodland, as far as the average level of the entire basin is concerned, evapotranspiration has increased by 20.17 mm and 45.83 mm, groundwater recharge has increased by 4.14 mm and 4.97 mm, and surface runoff has decreased by 24.59 mm and 49.59 mm. In the conversion process, the increase of evapotranspiration is the main reason for the decrease of runoff production. In terms of spatial response, the hydrological components in the middle and lower reaches of the basin are more sensitive to the spatial response of land use change than the tributaries and the upper reaches.

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Last Update: 2021-04-20